CN112297952A - Energy control system, method and device and automobile - Google Patents
Energy control system, method and device and automobile Download PDFInfo
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- CN112297952A CN112297952A CN201910693562.1A CN201910693562A CN112297952A CN 112297952 A CN112297952 A CN 112297952A CN 201910693562 A CN201910693562 A CN 201910693562A CN 112297952 A CN112297952 A CN 112297952A
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- heat exchanger
- liquid cooling
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- power battery
- heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
- B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides an energy control system, method and device and an automobile, and relates to the technical field of automobiles. The energy control system includes: the condenser is arranged in the passenger cabin of the electric automobile; the first heat exchanger can exchange heat with a liquid cooling system of the power battery; the second heat exchanger is connected with the motor cooling loop through a liquid cooling pipeline; the energy recovery component, the first liquid-cooling heater, the condenser and the first heat exchanger form a liquid-cooling circulation loop, and heat on the second heat exchanger can be transmitted to the liquid-cooling circulation loop through the energy recovery component; the heating controller of the first liquid cooling heater is connected with the motor controller in parallel, and a circuit of the parallel connection is provided with a change-over switch. By collecting the waste heat of the motor cooling loop and the braking energy which can not be recovered by the power battery, the auxiliary passenger cabin and the power battery are heated, and the energy utilization efficiency of the whole vehicle is improved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an energy control system, method and device and an automobile.
Background
With the development of science and technology, automobiles become indispensable transportation means in daily life of people; because fuel oil is used as an unrenewable resource, more and more automobile manufacturers gradually focus on research and production of pure electric vehicles in order to reduce the usage amount of the fuel oil.
The electric automobile adopts a power battery to provide energy for a complete automobile dynamic system and an air conditioning system, and the mileage of the battery automobile is attenuated by 30-50% in a low-temperature environment, so that the reason for serious attenuation of the mileage of the electric automobile is as follows: 1, the discharge electric quantity is reduced in the low-temperature environment of the battery; 2, heating of the passenger compartment and the battery consumes most of the energy of the battery; and 3, under a low-temperature environment, the mechanical resistance of the vehicle is increased, and the energy consumption of the vehicle is increased. By adopting the power battery with small low-temperature attenuation and the optimized air-conditioning control strategy, the influence of low temperature on the driving range of the electric automobile can be effectively reduced. The air conditioning system of the electric automobile generally heats the battery and the passenger compartment by the PTC heating technology or the heat pump technology. The PTC heating technology converts the electric energy of the battery into heat energy through the resistance wire, has the characteristics of quick temperature rise and high power consumption, and can obviously reduce the driving range of the battery automobile by using the PTC heating technology; the heat pump technology uses a pump to move heat from a low position to a high position, and the highest heating efficiency can be higher than that of the PTC technology, so that the mileage attenuation of the electric automobile is effectively reduced. During the running process of the electric automobile in the low-temperature environment, energy is wasted, and the wasted energy mainly comprises two parts: 1, because the temperature of the battery is low, the battery absorbs part of energy generated by braking, and other energy is consumed by mechanical braking; 2, heat generated during the operation of the motor, the DCDC and the like is released to the air. Therefore, there is a need to provide a method for effectively reducing the mileage degradation of an electric vehicle in a cold environment.
Disclosure of Invention
The embodiment of the invention provides an energy control system, method and device and an automobile, which are used for solving the problem of reducing the attenuation of the endurance mileage of an electric automobile in a cold environment.
In order to solve the above technical problem, an embodiment of the present invention provides an energy control system applied to an electric vehicle, where the energy control system includes:
the condenser is arranged in a passenger cabin of the electric automobile;
the first heat exchanger can exchange heat with a liquid cooling system of a power battery of the electric automobile;
the second heat exchanger is connected with a motor cooling loop of the electric automobile through a liquid cooling pipeline;
the energy recovery component, the first liquid-cooled heater, the condenser and the first heat exchanger form a liquid-cooled circulation loop, and heat on the second heat exchanger can be transmitted to the liquid-cooled circulation loop through the energy recovery component;
the heating controller of the first liquid cooling heater is connected with the motor controller in parallel, and a circuit of the parallel connection is provided with a change-over switch.
Further, the motor controller is connected with the power battery in parallel.
Further, the energy control system further comprises:
and the second liquid cooling heater is connected with the power battery and used for transmitting heat to a liquid cooling system of the power battery.
Further, the energy control system further comprises:
an energy management controller connected to the heating controller, the diverter switch, and the second heat exchanger, respectively.
Further, the condenser with first heat exchanger connects in parallel and establishes on the liquid cooling circulation circuit, the condenser through first lateral conduit with first liquid cooling heater is connected, first heat exchanger through second lateral conduit with liquid cooling heater is connected, just be provided with first electronic switch on the first lateral conduit, be provided with second electronic switch on the second lateral conduit.
Further, the energy recovery means includes an evaporator and a compressor connected in series to the liquid cooling circulation circuit.
An embodiment of the present invention further provides an energy control method, which is applied to the energy control system, where the energy control method includes:
when the heating requirement of the electric automobile is monitored, controlling the second heat exchanger to be started, and transmitting heat on the motor cooling loop to the liquid cooling circulation loop through the second heat exchanger;
detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller;
if the braking recovery current is larger than the maximum charging current, the change-over switch is controlled to be closed, the motor controller is connected with the heating controller, and heat obtained through the braking recovery current is transmitted to the liquid cooling circulation loop through the first liquid cooling heater.
Further, the condenser and the first heat exchanger are connected in parallel and arranged on the liquid cooling circulation loop, the condenser is connected with the liquid cooling heater through a first branch pipeline, the first heat exchanger is connected with the liquid cooling heater through a second branch pipeline, a first electronic switch is arranged on the first branch pipeline, and when a second electronic switch is arranged on the second branch pipeline, the method further comprises the following steps:
the first electronic switch of the liquid cooling circulation loop is controlled to be closed, the condenser is connected into the liquid cooling circulation loop to heat the passenger cabin, and/or the second electronic switch of the liquid cooling circulation loop is controlled to be closed, the first heat exchanger is connected into the liquid cooling circulation loop to heat the power battery.
Further, the method further comprises:
monitoring an air conditioner heating starting signal of the electric automobile and the temperature of a power battery pack of the electric automobile;
and when the temperature of the power battery pack is lower than a preset temperature or the air conditioner heating starting signal is detected, determining to monitor the heating requirement of the electric automobile.
Further, the method further comprises:
and when the braking recovery current is less than or equal to the maximum charging current, the change-over switch is controlled to be switched off, and the motor controller is controlled to be connected with the power battery to charge the power battery.
An embodiment of the present invention further provides an energy control device, which is applied to the energy control system described above, and the energy control device includes:
the first control module is used for controlling the second heat exchanger to be started when the heating requirement of the electric automobile is monitored, and the heat on the motor cooling loop is transmitted to the liquid cooling circulation loop through the second heat exchanger;
the detection module is used for detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller;
and the second control module is used for controlling the switch to be closed if the braking recovery current is greater than the maximum charging current, and the motor controller is connected with the heating controller, so that the heat acquired by the braking recovery current is transmitted to the liquid cooling circulation loop through the first liquid cooling heater.
The embodiment of the invention also provides an automobile comprising the energy control device.
The invention has the beneficial effects that:
above-mentioned scheme, through collecting motor cooling circuit's waste heat and the braking energy that can not be retrieved by power battery, played supplementary passenger cabin and power battery heating, promoted whole car energy utilization efficiency's effect to reduce power battery's energy consumption, realized the purpose of extension vehicle continuation of the journey mileage, solved heat pump air conditioner simultaneously and used under cold environment, the problem that the evaporimeter frosted easily.
Drawings
FIG. 1 is a schematic diagram of an energy control system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of an energy control method according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of an energy control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides an energy control system, method and device and an automobile, aiming at the problem of reducing the mileage attenuation of an electric automobile in a cold environment.
As shown in fig. 1, an embodiment of the present invention provides an energy control system applied to an electric vehicle, where the energy control system includes:
the condenser is arranged in a passenger cabin of the electric automobile;
the first heat exchanger can exchange heat with a liquid cooling system of a power battery of the electric automobile;
the second heat exchanger is connected with a motor cooling loop of the electric automobile through a liquid cooling pipeline;
the energy recovery component, the first liquid-cooled heater, the condenser and the first heat exchanger form a liquid-cooled circulation loop, and heat on the second heat exchanger can be transmitted to the liquid-cooled circulation loop through the energy recovery component;
the heating controller of the first liquid cooling heater is connected with the motor controller in parallel, and a circuit of the parallel connection is provided with a change-over switch.
Specifically, the motor controller is further connected in parallel with the power battery.
Specifically, the energy control system further includes:
and the second liquid cooling heater is connected with the power battery and used for transmitting heat to a liquid cooling system of the power battery.
The second liquid cooling heater is used for heating the power battery in a cold environment when the power battery has a heating demand, and the heat collected in the liquid cooling circulation loop is used for assisting the power battery to heat, so that the electric quantity consumed by the heating power battery is reduced, and the endurance mileage of the vehicle is improved.
An energy management controller connected to the heating controller, the diverter switch, and the second heat exchanger, respectively.
Specifically, the heating controller is used for controlling the power of the first liquid-cooling heater, wherein the energy management controller controls the power of the heating controller according to the power requirement, so as to realize the optimal application of braking energy; the energy management controller is also used for realizing the management of braking energy, and distributing braking recovery current to the power battery and the first liquid cooling heater according to the charging capacity and the heating requirement of the battery.
It should be noted that the system adopts a serial energy collection mode to collect the motor braking energy and the residual heat of the motor cooling loop respectively.
Specifically, the condenser with first heat exchanger connects in parallel and establishes on the liquid cooling circulation circuit, the condenser through first lateral conduit with first liquid cooling heater connects, first heat exchanger through the second lateral conduit with liquid cooling heater connects, just be provided with first electronic switch on the first lateral conduit, be provided with second electronic switch on the second lateral conduit.
It should be noted that the first electronic switch and the second electronic switch are both connected to the energy management controller, and the energy management controller can distribute energy on the circulation loop to the passenger compartment and the power battery according to the battery heating requirement and the passenger compartment heating requirement.
Specifically, the energy recovery means includes an evaporator, a capillary tube and a compressor connected in series to the liquid cooling circulation circuit.
It should be noted that, in the energy control system, the second heat exchanger and the recovery component collect waste heat of the cooling liquid in the motor cooling loop, that is, the second heat exchanger and the evaporator absorb the temperature of the motor cooling liquid and transfer the heat to the liquid of the condenser, the refrigerant of the condenser absorbs the heat to be changed into a mixture of gas and liquid, the gas is changed into high-temperature and high-pressure gas through the compressor, the liquid is changed into high-temperature liquid through the first liquid cooling heater, and finally the heat is released to the outside through the condenser. Meanwhile, the evaporator absorbs the waste heat of the motor cooling liquid through the second heat exchanger, and the problem that the evaporator frosts in a low-temperature environment is solved.
As shown in fig. 2, an embodiment of the present invention further provides an energy control method, which is applied to the energy control system described above, where the energy control method includes:
and step 21, when the heating requirement of the electric automobile is monitored, controlling the second heat exchanger to be started, and transmitting heat on the motor cooling loop to the liquid cooling circulation loop through the second heat exchanger.
And step 22, detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller.
And step 23, if the braking recovery current is larger than the maximum charging current, controlling the switch to be closed, connecting the motor controller with the heating controller, and transmitting the heat obtained by the braking recovery current to the liquid cooling circulation loop through the first liquid cooling heater.
In addition, in a low-temperature environment, the activity of the electrolyte of the power battery is poor, so that the charging and discharging performance of the battery is poor, the discharging capacity of the battery is reduced, and the recovery rate of the braking energy of the whole vehicle and the dynamic performance of the vehicle are affected. Under the low temperature environment of the battery, because the charging power allowed by the battery is reduced, the energy of vehicle braking can not be completely received by the battery, thereby not only wasting the energy, but also reducing the braking performance.
The invention provides a method for recovering braking energy, which is realized by connecting a first liquid-cooled heater and a power battery in parallel, judging whether the battery can recover all braking energy or not according to the maximum allowable charging current and the braking recovery current of the battery by an energy management controller in the braking process of a vehicle, and if the braking recovery current is larger than the maximum charging current, controlling a switch to be closed by the energy management controller, and distributing the braking energy to the power battery for charging and the first liquid-cooled heater for heating.
Specifically, the condenser and the first heat exchanger are connected in parallel and arranged on the liquid cooling circulation loop, the condenser is connected with the liquid cooling heater through a first branch pipeline, the first heat exchanger is connected with the liquid cooling heater through a second branch pipeline, a first electronic switch is arranged on the first branch pipeline, and when a second electronic switch is arranged on the second branch pipeline, the method further comprises:
the first electronic switch of the liquid cooling circulation loop is controlled to be closed, the condenser is connected into the liquid cooling circulation loop to heat the passenger cabin, and/or the second electronic switch of the liquid cooling circulation loop is controlled to be closed, the first heat exchanger is connected into the liquid cooling circulation loop to heat the power battery.
It should be noted that the energy management controller may control the first electronic switch and the second electronic switch according to the battery heating requirement and the passenger compartment heating requirement, so as to control the use of heat on the liquid cooling circulation loop, specifically, when the first electronic switch is turned on and the second electronic switch is turned off, the energy management controller is used for heating the passenger compartment; when the first electronic switch is switched off and the second electronic switch is switched on, the first electronic switch is used for heating the power battery; when the first electronic switch and the second electronic switch are closed at the same time, the heating device is used for heating the passenger compartment and the power battery.
Specifically, before step 21, the method further comprises:
monitoring an air conditioner heating starting signal of the electric automobile and the temperature of a power battery pack of the electric automobile;
and when the temperature of the power battery pack is lower than a preset temperature or the air conditioner heating starting signal is detected, determining to monitor the heating requirement of the electric automobile.
It should be noted that, when the braking recovery current is less than or equal to the maximum charging current of the power battery, the braking recovery energy is all used for charging the power battery, so the method further includes:
and when the braking recovery current is less than or equal to the maximum charging current, the change-over switch is controlled to be switched off, and the motor controller is controlled to be connected with the power battery to charge the power battery.
Further, when the air conditioner closing signal of the electric automobile is monitored and the temperature of the power battery pack is higher than or equal to the preset temperature, the second heat exchanger and the first liquid cooling heater are controlled to be closed.
As shown in fig. 3, an embodiment of the present invention further provides an energy control device, which is applied to the energy control system described above, where the energy control device includes:
and the first control module 31 is used for controlling the second heat exchanger to be started when the heating requirement of the electric automobile is monitored, and the heat on the motor cooling loop is transmitted to the liquid cooling circulation loop through the second heat exchanger.
And the detection module 32 is used for detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller.
And the second control module 33 is used for controlling the switch to be closed if the braking recovery current is greater than the maximum charging current, and the motor controller is connected with the heating controller, so that the heat acquired by the braking recovery current is transmitted to the liquid cooling circulation loop through the first liquid cooling heater.
Specifically, the condenser with first heat exchanger connects in parallel and establishes on the liquid cooling circulation circuit, the condenser through first lateral conduit with the liquid cooling heater is connected, first heat exchanger through the second lateral conduit with the liquid cooling heater is connected, just be provided with first electronic switch on the first lateral conduit, when being provided with second electronic switch on the second lateral conduit, energy control device still includes:
and the third control module is used for controlling the first electronic switch of the liquid cooling circulation loop to be closed, the condenser is connected into the liquid cooling circulation loop to heat the passenger cabin, and/or the second electronic switch of the liquid cooling circulation loop is closed, the first heat exchanger is connected into the liquid cooling circulation loop to heat the power battery.
Specifically, the energy control device further includes:
the monitoring module is used for monitoring an air conditioner heating starting signal of the electric automobile and the temperature of a power battery pack of the electric automobile;
and when the temperature of the power battery pack is lower than a preset temperature or the air conditioner heating starting signal is detected, determining to monitor the heating requirement of the electric automobile.
Specifically, the energy control device further includes:
and the fourth control module is used for controlling the change-over switch to be switched off when the braking recovery current is less than or equal to the maximum charging current, and controlling the motor controller to be connected with the power battery to charge the power battery.
The embodiment of the invention also provides an automobile comprising the energy control device.
It should be noted that, the automobile provided with the energy control device can assist the passenger cabin and the power battery to heat by collecting the waste heat of the motor cooling loop and the braking energy which can not be recovered by the power battery in a cold environment, so that the energy utilization efficiency of the whole automobile is improved, the energy consumption of the power battery is reduced, the purpose of prolonging the endurance mileage of the automobile is realized, and meanwhile, the problems that the heat pump air conditioner is used in the cold environment and the evaporator is easy to frost are solved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (12)
1. An energy control system applied to an electric vehicle, the energy control system comprising:
the condenser is arranged in a passenger cabin of the electric automobile;
the first heat exchanger can exchange heat with a liquid cooling system of a power battery of the electric automobile;
the second heat exchanger is connected with a motor cooling loop of the electric automobile through a liquid cooling pipeline;
the energy recovery component, the first liquid-cooled heater, the condenser and the first heat exchanger form a liquid-cooled circulation loop, and heat on the second heat exchanger can be transmitted to the liquid-cooled circulation loop through the energy recovery component;
the heating controller of the first liquid cooling heater is connected with the motor controller in parallel, and a circuit of the parallel connection is provided with a change-over switch.
2. The energy control system of claim 1, wherein the motor controller is further connected in parallel with the power battery.
3. The energy control system of claim 1, further comprising:
and the second liquid cooling heater is connected with the power battery and used for transmitting heat to a liquid cooling system of the power battery.
4. The energy control system of claim 1, further comprising:
an energy management controller connected to the heating controller, the diverter switch, and the second heat exchanger, respectively.
5. The energy control system of claim 1, wherein said condenser is connected in parallel with said first heat exchanger on said liquid-cooled circulation loop, said condenser is connected to said first liquid-cooled heater via a first branch line, said first heat exchanger is connected to said liquid-cooled heater via a second branch line, and said first branch line has a first electronic switch disposed thereon, and said second branch line has a second electronic switch disposed thereon.
6. The energy control system of claim 1, wherein said energy recovery means comprises an evaporator and a compressor connected in series on said liquid cooling circulation loop.
7. An energy control method applied to the energy control system according to any one of claims 1 to 6, characterized by comprising:
when the heating requirement of the electric automobile is monitored, controlling the second heat exchanger to be started, and transmitting heat on the motor cooling loop to the liquid cooling circulation loop through the second heat exchanger;
detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller;
if the braking recovery current is larger than the maximum charging current, the change-over switch is controlled to be closed, the motor controller is connected with the heating controller, and heat obtained through the braking recovery current is transmitted to the liquid cooling circulation loop through the first liquid cooling heater.
8. The power control method of claim 7, wherein the condenser is connected to the liquid-cooled circulation circuit in parallel with the first heat exchanger, the condenser is connected to the liquid-cooled heater through a first branch line, the first heat exchanger is connected to the liquid-cooled heater through a second branch line, and a first electronic switch is provided on the first branch line, and a second electronic switch is provided on the second branch line, the method further comprising:
the first electronic switch of the liquid cooling circulation loop is controlled to be closed, the condenser is connected into the liquid cooling circulation loop to heat the passenger cabin, and/or the second electronic switch of the liquid cooling circulation loop is controlled to be closed, the first heat exchanger is connected into the liquid cooling circulation loop to heat the power battery.
9. The energy control method of claim 7, further comprising:
monitoring an air conditioner heating starting signal of the electric automobile and the temperature of a power battery pack of the electric automobile;
and when the temperature of the power battery pack is lower than a preset temperature or the air conditioner heating starting signal is detected, determining to monitor the heating requirement of the electric automobile.
10. The energy control method of claim 7, further comprising:
and when the braking recovery current is less than or equal to the maximum charging current, the change-over switch is controlled to be switched off, and the motor controller is controlled to be connected with the power battery to charge the power battery.
11. An energy control device applied to the energy control system according to any one of claims 1 to 6, characterized in that the energy control device comprises:
the first control module is used for controlling the second heat exchanger to be started when the heating requirement of the electric automobile is monitored, and the heat on the motor cooling loop is transmitted to the liquid cooling circulation loop through the second heat exchanger;
the detection module is used for detecting the maximum charging current of the current power battery and the braking recovery current provided by the motor controller;
and the second control module is used for controlling the switch to be closed if the braking recovery current is greater than the maximum charging current, and the motor controller is connected with the heating controller, so that the heat acquired by the braking recovery current is transmitted to the liquid cooling circulation loop through the first liquid cooling heater.
12. An automobile, characterized by comprising the energy control device of claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693562.1A CN112297952A (en) | 2019-07-30 | 2019-07-30 | Energy control system, method and device and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693562.1A CN112297952A (en) | 2019-07-30 | 2019-07-30 | Energy control system, method and device and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112297952A true CN112297952A (en) | 2021-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910693562.1A Pending CN112297952A (en) | 2019-07-30 | 2019-07-30 | Energy control system, method and device and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112297952A (en) |
Cited By (2)
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| CN114670718A (en) * | 2022-02-07 | 2022-06-28 | 北京新能源汽车股份有限公司 | Electric automobile heat control method and device and electric automobile |
| CN115230537A (en) * | 2021-04-23 | 2022-10-25 | 北京昇科能源科技有限责任公司 | Charging method and device of charging pile |
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